Computer animation of principles of operation of a seismograph that measures vertical ground oscillations.
This narrated animation shows ray paths and directions of particle motions for P, S, and surface waves traveling from a distant earthquake to a seismic station. A seismogram records the arrival times of these three types of seismic waves.
A birds-eye view of a strike slip fault with trees shaking during slip along the fault. Watch the apples drop!
Small size animation of horizontal block motions across a strike-slip fault.
Animation of horizontal block motions across a strike-slip fault.
Animation of plates moving apart at a spreading ocean ridge and horizontal motions across a transform fault that offsets the spreading ridge.
Computer animation of a shear (secondary) wave traveling across a slinky.
Small-size animation of block motion across a reverse (compressional) fault.
Full size animation of block motions across a reverse (compressional) fault.
Computer animation of primary (pressure) wave traveling in a slinky.